Sadiron construction



Aug. 16, 1938. H. SMITH 2,127,050

SADIRON CONSTRUCTION Filed Jan. 28, 1935 2 Sheets-Sheet l M flw Aug. 16, 1938. H. SMITH SADIRON CONSTRUCTION Filed Jan. 28, 1935 2 Sheets-Sheet 2 Patented Aug. 16, 1938 sanmon coNs'mUc'rroN Howard Smith, Believille, IlL, sssignor to Knapp- Monarch Company, St. Louis, Mo., a corporation of Missouri Application January 28,1935, Serial No. am

13 Claims.

The object of my invention is to provide a sadiron construction, which is simple, durable and comparatively inexpensive to manufacture.

A further object is to provide a sadiron construction having novel means for retaining a heating element on the sole plate in such position that the maximum of heat is transmitted therefrom to' the sole plate and for insulating the. ends of the heating element from the sole plate and weight member of the iron.

A further object is to provide a terminal member for the ends of the heating element-having terminal pins with which the ends of the heating element are associated in a novel manner, the

means of lugs formed therein engaging notches in the shell of the iron.

Still another object is to provide a combined rest and terminal protector member which is readily connected with the iron by means of a part interposed between the shell and sole plate of the iron and another part held in position by one of the nuts which holds the shell of the iron in position, this member also having a handle arm with which one end of the handle for the iron can be connected.

With these and other objects in view my invention consists in the construction, arrangement and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims and illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of a sadiron construction embodying my invention showing it in rest position.

Figure 2 is a vertical, central sectional view through the iron showing it in ironing position.

Figure 3 is a sectional view on the line 3-4 of Figure 2 showing the sole plate with the heating element associated therewith.

Figure 4. is a sectional view on the line 1-4 of Figure 2 showing a bottom planview of the shell, terminal member and combined rest and terminal protector.

Figure 5 is an enlarged sectional view on the line 5-5 of Figure 3.

Figure 6 is a sectional view similar to the right terminal member being retained in position by terminal pins with the end of the heating element resting in a slot thereof.

Figure 9 is a similar view showing the slot deformed to retain the heating element end in position. r 5

Figure 10 is a sectional view, enlarged, on the line Ill-40 of Figure 9 showing how the end of the heating element is clamped in the terminal pin.

Figure 11 is a' sectional view on the line ll-ll 10 of Figure 3 showing the parts enlarged.

Figure 12 is a perspective view of the rear portion of the shell showing the terminal member associated therewith and part of the combined rest and terminal protector separated from the 15 shell and terminal member; and

Figure 13 is a separated perspective view of the combined rest and terminal protector which is formed in two parts.

0n the accompanying drawings I have used the reference numeral ll to indicate asole plate. The sole plate I0 is provided with a double spiral groove l2 in which a heating element I4 is laid. The heating element I may be of the type having a coil/Ila of resistance wire embedded in insulating material which is initially plastic but becomes hardened upon being heated. As shownin Fig. 5, each stretch of the heating element H has its own groove i2 and these are separated by a wall I formed of the sole plate material and extending up between the stretches of the heating element, thus providing a maximum heat absorbing surface for the heating element as distinguished from relatively wide grooves in I which the stretches of the heating element are wound side by side.

At the ends of the heating element l4 sockets it are provided (see Figure 11). Within each socket I8 I provide an insulating disc 20 made of porcelain, Lavite or the like, and-a bushing 22 also of insulating material. The bushing 22 has a central perforation 24 and a radially extending groove 26. The end of the resistance wire Ila is preferably doubled as indicated at llc and extends through the groove 2 and the perforation 24.

The bushing 22 has a sleeve-like extension 28.

A weight member 30 is superposed on the sole plate ii and retains the heating element ll in position. The weight member 3| has a perforation 32 for each sleeve-like extension 28 of the bushing 22.

Bolts 34 and nuts 36 are provided for retaining the weight member II in position on the sole plate. These are retained in threaded openings ",0! the sole plate. A shell 4| is retained in position covering the weight member 3| by nuts 42 which are threaded on to the upper ends of the bolts I4. Lugs 8|, 4! and 4| are provided for positioning the shell relative to the sole plate.

A terminaimember A, shown separated from the rest or the sadiron in Figure 7, is provided. It comprises a supporting element 44 made of sheet metal or the like which supports terminal pins 4| in position suitably insulated with respect to the element 44. Heads 4| are provided on the pins 4| and lock nuts 5| are screwed on to the pins for retaining them rigidly in position on the supporting element 44.

The heads .4l are slotted as indicated at 52 and originally these slots are open as they appearlni 'igureaandasintheupperhalioi Figure 'l.

The heating element end He is inserted in the slot 2 and then the head 4| is deformed crosswise oi the slot as indicated at 54 in Figure 9 and as in the lower hall of Figure '7. This deformation closes the slot around the heating element end 0 as best shown in Figure 10, thus making a good mechanical and electrical connection between the terminal pin and the end of the heating element.

The supporting element 44 has a reduced lug l4 atone end and a reduced lug 5| at the other end. The shell 4| has a notch 40 to receive the lug i4 and a notch |2 to receive the lug 5|. The lug N is angle-shapcd-as shown in Figure 6, thus providing a shoulder at 6|, while the lug 58, also being angle-shaped provides a shoulder or surlace These shoulders are engageable with the sides oi the notches and 82 to prevent lateral displamment oi the terminal member relative to the notches.

A combined rest and terminal protector B is provided. It is formed in two parts as shown in Figure 13, one part having the doubled flanges 4| and 1| forming a rest leg and also having a second rest leg 12, a handle arm II and an attachment lug II.

The second part has a plate-like portion 1|, on which the name oi the iron or other data may be stamped, and flanges and 82 serving in conjunction with the parts 8| to 16 inclusive to encase the terminal pins 4|. The stamping forming the parts ll, and 82 is provided with bendable ears and N for attaching this part to the flange 1| of the other part. Periorations are provided for the ears l4, while the car 06 coacts with the rear edge of an opening 9|, formed in the flange 1|.

The flange is provided with a T-shaped lug I! (see Figure 12). The notch 82 in the shell 40 is made deep enough to receive both the 1118 5| 0! the terminal member A and the lug 92 o! the combined rest and terminal protector B.

The head of the T-shaped lug 82 prevents rearward displacement of the flange 0 relative to the shell 4|.

During assembly the terminal member A- is placed in position as shown in Figure 6 and then the member B is placed so that the lug 82 thereof is in its proper position. The member B may then beswung about the notch 82 as a pivot, as shown by the arrow a in Figure 6, until the attachmentlug 1| rests on the shell" as shown in Figure 2. The rearward nut 42 for the shell can then be placed in position and the flange 68 of the member B will be retained between the shell and sole plate while the lug 16 will, or course, be retained by the nut 42. Thus a simpie means is provided for assembling the parts A and B together by manipulation oi but one attaching member (the rear nut 42).

A handle 94 is provided for the sadiron. A handle arm 8| is retained by the forward nut 41 and the handle $4 is mounted on the arm I4 0! the member B and the arm l6. 9| may be provided for this purpose.

The rest leg 12 of the member B is provided with an opening I". The openings 80 and I" provide for insertion of the plug I02 01 a cord set, as shown by dotted lines in Figure 2. The flanges Ill and I2 surround the plug 102 and in conjunction with the rest leg 12 protect the terminal pins 4| from being touched by the operator while the plug I02 is being inserted, thus serving as a protection against shock.

The leg I! and part of the flange 10, it will be noted are provided with reinforcing flanges I04 to strengthen these parts and prevent undesired bending thereof.

I have provided a sadiron construction having several novel features making the iron more iool proof" by providing adequate insulation ior the ends of the heating element and connecting these ends with the terminal pins. The iron is also readily' assembled without the necessity of using a multiplicity of connecting elements. The parts so interilt that when the shell is finally fastened in position the terminal member A and the rest and terminal protector B are rigidly retained in position against any possible accidental displacement.

Some changes may be made in the construction and arrangements of the parts of my device without departing from the real spirit and purpose of my invention and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

I claim as my invention:

1. In a sadiron construction, a sole plate, a heating element for said sole plate, a shell [or covering said sole plate and heating element and a terminal member for the ends of said heating element comprising a supporting element, terminal pins supported thereby, the upper and lower ends oi said supporting element having reduced lugs, said shell having an opening to be closed by said element, a notch in the side of said opening to receive said upper lug, the lower edge 01 said shell having a notch for said lower lug, said upper lug being retained against disassociation from its notch when said lower lug is in its notch and said lower lug being retained in its notch by said sole plate when said shell is assembled thereon.

2. In a sadiron construction, a sole plate, a heating element for said sole plate, a shell for covering said sole plate and heating element and a terminal member for the ends of said heating element comprising a supporting element, terminal pins supported thereby, said shell having an opening to be closed by said element, a notch in the edge of said opening and a notch in the lower edge oi said shell to receive the ends of said supporting element, said sole plate, when said shell is assembled in position thereon, retaining said supporting element in position relative to said sole plate and said shell.

3. In a sadiron construction, a sole plate, a heating element and a shell for said sole plate, a terminal member for the ends of said heating element comprising a supporting element, terminal pins supported thereby, said shell having an Screws opening for said terminal pins and having notches, one in the edge of said opening and one in the peripheral edge of said shell to receive the ends of said supporting element, said supporting element having shoulders to engage said shell adjacent said notch in the edge of said opening to thereby position said supporting element relative to said shell, said sole plate, when said shell is assembled in position thereon, retaining said supporting element in position.

4. In a sadiron construction, a sole plate, a heating element therefor, a shell for enclosing said heating element, terminal pins for the ends of said heating element, a combined rest and ter-v minal protector for said terminal pins, said protector being formed of a sheet of metal bent z shape and having enlarged openings through the upper two adjacent legs thereof to completely surround said terminal pinsand receive a terminal plug coacting therewith, and means for securing said shell to' said sole plate, said rest and terminal protector having a part retained between said shell and said sole plate and another part secured in position by said means.

5. In a sadiron construction, a sole plate, a heating element therefor, a shell for enclosing said heating element, terminal pins for the ends 7 of said heating element, a combined rest and terminal protector for said terminal pins, said rest and terminal protector comprising a pair of rest legs formed of sheet metal bent Z shape, one of said legs constituting an encircling portion for a supply cord plug when coacting with said pins, the upper two adjacent legs having enlarged openings therein completely surrounding said pins and plug, and means for securing said shell to said sole plate, said rest and terminal protector having a part secured in position by said means. 1

6. In a sadiron construction, a sole plate, a heating element therefor, a shell for enclosing said heating element, terminal pins for the ends of said heating element, a combined rest and terminal protector for said terminal pins, said rest and terminal protector comprising a single piece of sheet metal formed to provide a rest portion, at least one portion for encasing a supply cord plug when coacting with said pins, and a handle supporting arm, a handle for said sadiron having one end connected with said handle arm and supported thereby, and means for securing said shell to said sole plate, said rest and terminal protector having a part retained between said shell and said sole plate and another part secured in position by said means.

'7. In a sadiron construction, a sole plate, a heating element therefor, a shell for enclosing said heating element, terminal pins for the ends of said heating element, a combined rest and terminal protector for said terminal pins, said rest and terminal protector comprising a pair of rest legs formed of sheet metal and bent V shape, one of said legs constituting an encasing portion for a supply cord plug when coacting with said pins. said legs having enlarged openings adjacent the apex of the V completely surrounding said pins and plug, means for securing said shell to said sole plate, said rest and terminal protector having a part retained between said shell and sole plate and another part secured in position by said means.

8. In a sadiron, a sole plate, a heating element therefor, a shell enclosing said heating element, a terminal member for the ends of said heating element, a combined rest and handle supporting arm for said iron, and means for securing said shell to said sole plate, said rest and handle supporting arm comprising a sheet of metal bent V-shape, having a pair of aligned openings in the arms thereof adjacent the apex thereof, having the handle supporting arm thereof extending upwardly from said apex, and having a part secured in position by the aforesaid means.

In a sadiron construction, a sole plate, a heating element for said sole plate, a shell for covering said sole plate and heating element,-

means for securing said shell to said sole plate,

a-terminal member for the ends of said heating element having terminal pins supported thereby, a combined rest and terminal protector for said terminal member comprising a member extending in a plane which is inclinedupwardly and rearwardly from a position on said shell forwardly of said terminal pins, said member having an enlarged opening surrounding said terminal pins and adapted for reception of a connector plug coacting therewith, and a portion of said rest and terminal protector being adapted to be secured in position by the aforesaid securing means.

10. In a sadiron construction, a sole plate, a heating element for said sole plate, a shell for covering said sole plate and heating element, a terminal member for the ends of said heating element having terminal pins supported thereby, a combined rest and terminal protector, said rest and terminal protector comprising a pair of rest legs arranged in V-shape, a terminal encasing portion constituted by one of said legs, openings through said legs adjacent the apex of the V through which a terminal plug may extend, a

'notch in the edge of said shell and a portion on said rest and terminal protector adapted to coact with said notch, said portion being retained in said notch when said shell is assembled in position on said sole plate.

11. In a sadiron construction, a sole plate, a heating element for said sole plate, a shell for covering said sole plate and heating element and a terminal member for the ends of said heating element comprising a supporting element, terminal pins supported thereby, the ends of said supporting element having reduced lugs, said shell having notches to receive said lugs, one of said lugs being retained against disassociation from its notch when the other lug is in its notch and with, and a combined rest and terminal protector for said terminal member, said rest and terminal protector having a part retained between said shell and said sole plate, said terminal member being interposed between said part and said shell.

12. In a sadiron construction, a sole plate, a heating element for said sole plate, a shell for covering said sole plate and heating element and a terminal member for the ends of said heating element comprising a supporting element, terminal pins supported thereby, said shell having an opening and a notch in the edge of said opening to receive the upper end of said supporting element, the lower end thereof being interposed between said sole plate and the edge of said shell and retained thereby when the two are assembled relative to each other.

13. In a sadiron, a sole plate, a heating element, a shell, terminals for said heating element and a combined rest, handle supporting and terminal protecting member, said member comprising a pair of rest legs arranged in-V-shape, a

apex oi the V, a handle supporting arm extendterminal encasing portion constituted by one o! ber, adapted to coact iwith, said notch, said porsaid legs. openings through said legs adjacent the tion being retained in said notch when said shell is assembled in position on said sole plate and ing upwardly from said apex, a handle having another portion ofsaid member being secured in one end supported by said arm, means for seposition by the aforesaid securing means. curing said shell tosaid sole plate, a notch in the edge of said shell and a portion on said mem- HOWARD Blfl'lfl. 

